[R] How to request AIC information from "lm" object?

[ronggui]

You can use AIC to get what you want.

#example from lm help page
>  ctl <- c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14)
>      trt <- c(4.81,4.17,4.41,3.59,5.87,3.83,6.03,4.89,4.32,4.69)
>      group <- gl(2,10,20, labels=c("Ctl","Trt"))
>      weight <- c(ctl, trt)
>      anova(lm.D9 <- lm(weight ~ group))
Analysis of Variance Table

Response: weight
          Df Sum Sq Mean Sq F value Pr(>F)
group      1 0.6882  0.6882  1.4191  0.249
Residuals 18 8.7293  0.4850
#get the AIC of lm model.
> AIC(lm.D9)
[1] 46.17648



2006/6/9, Michael <comtech.usa at gmail.com>:
> Can "lm" return AIC information?
>
> Thanks a lot!
>
>         [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
>


-- 
»ÆÈÙ¹ó
Deparment of Sociology
Fudan University